Example:
15 Btu/h·ft² = 0.25 Btu/min·ft²
1 Btu/h·ft² = 0.016667 Btu/min·ft² | 1 Btu/min·ft² = 60.000001 Btu/h·ft²
Conversion Steps:
15 × (3.154590745 / 189.275446548) = 0.249999998